It’s hard for the girl to enter the Legion Academy, but Hilda manages it—and now she’s aiming for a new height: to get into a combat unit. However, when a friend starts having terrifying dreams, a fellow cadet falls under a curse, and the new rector begins secret games with dark magicians, she steps into a different role—the role of an investigator. She must find where the threat comes from and prevent a tragedy in the Academy, while the course supervisor does everything to help her. What drives him: an inappropriate sympathy for the cadet or a desire to hide something? Can Hilda spot the enemy if he’s hiding close by among her nearest circle?